Expansion-joint device.



00 0 9 1 4 R E F D E T N E T A P 1 R E P P Tl E S P 7 1 1 8 7 8 n N EXPANSION JOINT DEVICE.

APPLICATION FILED JAN. 4, 1907.

. sion joint device for steam pi ing or conduits, which is applied transverse y to the direc- FRANZ SEIFFERT, OF BERLIN, GERMANY.

EXPANSION-JOINT DEVICE.

Specification of Letters Patent.

Patented Feb. 4, 1908.

Application filed January 4.1907. Serial No. 350.818.

T all whom it may concern:

Be is known that I, FRANZ Surrrnnr, a subject of the King of Prussia, German Emperor, and resident of 154 Koepeniclwrstrasse, Berlin, Kingdom of Prussia, German Empire, manufacturer, have invented new and useful Improvements in Expansion; Joint Devices, of which the following is an exact specification.

,My invention has for-its object an expantion of the steam piping and permits the letter to expand in a large scale. In my new ex ansion oint device an expansion ipe with a all joint -.at each end is employed and the ball joints have metallic contact surfaces without any stuffing, box packing and tightness is insured entirely by the internal steampressure. This new'expahsion joint device is very simple and yet quite steam-tight.

Furthermore provisions are made for preventing the breaking of the joint by reason of a partialivacuum if the steam is shut off. I attain tiiisipur ose by the application of springs, thatqten to ress the joint surfaces gently against each ot ier. The springs abdt with art'spherical face-pieces, to be pressed toget er, so. that they can easily follow any deviations of the expansion joint pipe.

In order to make my invention more clear,- I refer to the accompanying drawings, in

i which:

.' carried round 90 degrees Figure 1 is a fragmentary section through one end of the device, the s ring device being om its ,real osition in order to show it more clearly. ig. 2

is an elevation of the complete expansionjoint device in smaller scale. I

a is the expansion pipe and d aret wofelbow pieces, whic 1 are secured to the propr steam conduit d extending in thedirection of the lines A-B, C-D. The pipe (1 is arranged transversely to the ,direction of these'lines. b is a tightening piece screwed to the one end of the expansion pipe u and revented from any accidental rotation by t 1e bolt b.

c is a flange loosely arranged around the I end of the expansion pi e a.

The tightening piece is provided with a part spherical joint face which bears against the corresponding hollow face of the flange c.

Any stuffing box packing is dispensed with according to this arrangement.

The flange c is connected ,by means of bolts 0 with the elbow-pipe d; of course, the

usual packing is provided for obtaining a steam-ti ht joint between both these parts.

7b is a bolt provided with a thread it that rel/ /ith its lowerend the bolt h is located in, the cylinder i which is provided with a head 9 having a part spherical face bearing therewith a 'ainst the corresponding hollow face of the rings c. m is a cap supporting the one end of the spring f.

The operation of the device is as follows: If steam is flowing through the conduit d which is expanded thereby, the ends of the conduit joined to the elbow-pieces d are moved in the direction of the arrows due to the heating of the material. In consequence of this movement the expansion pipe a is caused to occupy an inclined position towards the direction of the lines A-B, (3- 1), a'iid due to the arrangement of the tightening pieces 7) on the expansion pipe a the latter is enabled to occupy easily such an inciined position. The steam-tight joint between both the parts bc is insured by thein' ternal steam'- pressure, which forces the part bagainst the flange c, and for the purpose of permitting the steam to act broadly upon the (part b the elbow-piece d is en- Any breaking of the joint in larged at case a partial vacuum should arise, when the steam is shut off, is prevented by the arrangement of the springs f which press the joint faces of theparts c and b lightly against each other. Due to the arrangement of the heads 9 9*, the springs f are enabled to follow any deviation of the pipe at from the flange c,

and the cap m can be adjusted by means of the nut h.

Having thus fully described tlie nature of my invention, what. I desire to] secure by Letters Patent of. the United States is:

1. In the herein described steam piping the combination of an expansion pipei transversely applied to the steam p'ping and having partly spherical faces at its ends, flanges having partly spherical faces fittin steam tight on the first mentioned faces, t e faces being pressed against each other by the mner steam pressure, and springs which are supported on the one sideby the said flanges and on the other side by the expansion pipe for holding the tightening surfaces In contact, when a vacuum happens in the steam ranged on the expansion pipe.

in the herein :lescrihed steam piping the mznhination of an expansion pipe trans- -xerselv applied to the steam piping, tinui to the end of the expansion pipe and having partly spherical him-5;. flanges, having pipin the spring being eccentrically arpherirnl l'nres of The rings are pressed by the inner steam pressure, "nl. having a hearing with a partly spherienl we. 2ll)lll'I1i(I1T:-l fixedly attached to the expansion pipe nnrl 'iinving partly spherical rin 5 zlll sphexiezil hire, against which the,

ifaces, springs eccentrically' arranged upon .3 the expansion pipe and supporting stems eonsisting of two teleseoped parts and having ends with partly spherical laces supporting against the partly spherical hearing of the flanges and of the ahutments an d means for adjusting the springs.

In witness whereof I havehereunto set my hand in the presenee of two witnesses.

FRANZ SEll l lflii'l.

i OLDEMAR HAUPT, HENRY HAsPER. 

